<html>
    <head>
        <style>
            body{
                padding: 0; 
                margin: 0;
            }
            .containar{ 
                    position:absolute;
                    width: 100%;
                    height: 100%;
                    background: #ccc;
                    
            }   
            .nav_top{
                    height: 50px; 
                    overflow: hidden;
                    background: #5cd7e4;
                }
            .nva_menu {
                position: absolute;
                top: 50px;
                bottom: 0px;
                width: 200px;
                overflow: auto;
                background: rgb(104, 105, 104);
            }
            .content{
                position: absolute;
                top:50px;
                left: 200px; 
                right: 0px; 
                bottom: 0px;
                overflow: auto; 
                background: white;
            }
            .content_toolbar{
                width: 100%;
                height: 50px;
                background:#4290c4
            }
            .content_body{
                position: absolute;
                top: 50px;
                bottom: 0px;
                width: 100%;
                overflow: auto;               
            }
        </style>
    </head>
    <body>
        <div class="containar">
            <div class="nav_top">
                <div style="width:200px; float:left;">LOGO</div>
                <div style="width:200px; float:right;text-align:right">头像下拉菜单</div>
            </div>
            <div class="nva_menu">
                菜单菜单
            </div>
            <div class="content">           
                 <div class="content_toolbar">
                    按钮、查询 
                 </div>
                 <div class="content_body">
                     内容内容
                    <div style="height: 1000px; width: 100px; margin: 50px auto; background: #ccc;"></div>
                 </div>
            </div>
         </div>
    </body>
</html>